Minor Changes

• #16466 31b6198 Thanks @fkatsuhiro! - This change updates the Svelte integration's type shims to treat non-children snippet props and any-typed props as optional. Previously, these were incorrectly marked as required in Astro files, causing false-positive type errors when using Svelte 5 components.
  • Adds HandleSnippetProps to make Snippets optional in Astro.
  • Distinguishes between generic and non-generic components to preserve inference.
  • Updates TSX generation to apply the appropriate directive wrapper.